ENG-4389 Eliminate many redundant outputschema from catalog/serialization.
ENG-4389 trimmed unused fields from surviving outputschema/TVEs
put tve column names back into serializations for the sake of expr indexes
Merge remote-tracking branch 'origin/master' into ENG-4389-trim-outputschema
Merge pull request #488 from VoltDB/ENG-4389-trim-outputschema

ENG-4389 Eliminate many redundant outputschema from catalog/serialization.